Process for the reduction of dyes
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United States of America Patent
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Sep 14, 1993
Grant Date -
N/A
app pub date -
Jan 29, 1991
filing date -
Jun 1, 1989
priority date (Note) -
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Abstract
In a process for reducing dyes in aqueous solution, a pair of electrodes is immersed in the solution. The cathode potential is maintained below the value at which hydrogen is evolved. A reducing agent is used, the redox potential of which, increased by the charge transfer overvoltage required for the reduction of the oxidized form of the reducing agent to the reduced form at the cathode, is less than the cathode potential.
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